National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce
Current conditions at

Hyannis, Barnstable Municipal-Boardman Airport (KHYA)

Lat: 41.67°NLon: 70.27°WElev: 49ft.

Fog/Mist

48°F

9°C

Humidity 100%
Wind Speed SW 15 mph
Barometer 29.53 in (1000.1 mb)
Dewpoint 48°F (9°C)
Visibility 3.00 mi
Wind Chill42°F (6°C)
Last update 12 Mar 8:56 am EDT
Extended Forecast for

South Dennis MA

  • Today

    Today: Rain, mainly after 11am. Temperature rising to near 49 by 11am, then falling to around 38 during the remainder of the day. Southwest wind 10 to 14 mph becoming northwest in the afternoon. Winds could gust as high as 25 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 49 °F⇓

    Rain

  • Tonight

    Tonight: Rain likely, possibly mixed with snow before 7pm, then a chance of snow between 7pm and 11pm. Cloudy during the early evening, then gradual clearing, with a low around 28. Northwest wind 11 to 15 mph. Chance of precipitation is 60%. New snow accumulation of less than one inch possible.

    Low: 28 °F

    Rain/Snow
    Likely then
    Partly Cloudy

  • Friday

    Friday: Increasing clouds, with a high near 40. Northwest wind 5 to 9 mph becoming light and variable.

    High: 40 °F

    Increasing
    Clouds

  • Friday Night

    Friday Night: A slight chance of rain after 2am. Mostly cloudy, with a low around 33. South wind 7 to 10 mph, with gusts as high as 24 mph. Chance of precipitation is 20%.

    Low: 33 °F

    Mostly Cloudy
    then Slight
    Chance Rain

  • Saturday

    Saturday: Sunny, with a high near 45. West wind 10 to 16 mph, with gusts as high as 34 mph.

    High: 45 °F

    Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 29. Northwest wind 5 to 9 mph, with gusts as high as 23 mph.

    Low: 29 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly cloudy, with a high near 43. Light and variable wind becoming east around 6 mph in the afternoon.

    High: 43 °F

    Mostly Cloudy

  • Sunday Night

    Sunday Night: A chance of rain after 1am. Cloudy, with a low around 35. Southeast wind 8 to 13 mph, with gusts as high as 28 mph. Chance of precipitation is 40%.

    Low: 35 °F

    Mostly Cloudy
    then Chance
    Rain

  • Monday

    Monday: Rain. High near 53. South wind 15 to 18 mph, with gusts as high as 38 mph. Chance of precipitation is 90%.

    High: 53 °F

    Rain

Detailed Forecast

Today
Rain, mainly after 11am. Temperature rising to near 49 by 11am, then falling to around 38 during the remainder of the day. Southwest wind 10 to 14 mph becoming northwest in the afternoon. Winds could gust as high as 25 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.
Tonight
Rain likely, possibly mixed with snow before 7pm, then a chance of snow between 7pm and 11pm. Cloudy during the early evening, then gradual clearing, with a low around 28. Northwest wind 11 to 15 mph. Chance of precipitation is 60%. New snow accumulation of less than one inch possible.
Friday
Increasing clouds, with a high near 40. Northwest wind 5 to 9 mph becoming light and variable.
Friday Night
A slight chance of rain after 2am. Mostly cloudy, with a low around 33. South wind 7 to 10 mph, with gusts as high as 24 mph. Chance of precipitation is 20%.
Saturday
Sunny, with a high near 45. West wind 10 to 16 mph, with gusts as high as 34 mph.
Saturday Night
Partly cloudy, with a low around 29. Northwest wind 5 to 9 mph, with gusts as high as 23 mph.
Sunday
Mostly cloudy, with a high near 43. Light and variable wind becoming east around 6 mph in the afternoon.
Sunday Night
A chance of rain after 1am. Cloudy, with a low around 35. Southeast wind 8 to 13 mph, with gusts as high as 28 mph. Chance of precipitation is 40%.
Monday
Rain. High near 53. South wind 15 to 18 mph, with gusts as high as 38 mph. Chance of precipitation is 90%.
Monday Night
Rain. Low around 34. South wind 14 to 16 mph, with gusts as high as 36 mph. Chance of precipitation is 80%.
Tuesday
A chance of rain. Partly sunny, with a high near 42. West wind 9 to 11 mph, with gusts as high as 22 mph. Chance of precipitation is 30%.
Tuesday Night
Partly cloudy, with a low around 24. Northwest wind around 8 mph, with gusts as high as 20 mph.
Wednesday
Sunny, with a high near 36. West wind around 7 mph.
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ABOUT THIS FORECAST

 
Point Forecast:
South Dennis MA
 41.69°N 70.16°W (Elev. 7 ft)
Last Update:
6:38 am EDT Mar 12, 2026
Forecast Valid:
9am EDT Mar 12, 2026-6pm EDT Mar 18, 2026
 
Forecast Discussion
 
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Additional Resources

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation